#include <stdio.h>

int
main ()
{
  int c, q = 1;
  while ((c = getchar ()) != EOF)
    {
      if (c == '"')
        {
          printf ("%s", q ? "“" : "”");
          q = !q;
        }
      else
        {
          printf ("%c", c);
        }
    }
  return 0;
}
